Coal breaker



June 10, 1 930. NORTON 1,763,408

COAL BREAKER Q I Filed Nov. 16, 1928 2 Sheets-Sheet l @z L Wig??? \BJ/ Z June 10, 1930. G. NORTON 1,763,408

GOAL BREAKER Filed Nov. 16, 1928 2 Sheets-Sheet 2 1. 71 60 for B, MZTMI Patented June 10, 1930 titans GEORGE NORTON, F BIRMINGHAM, ENGLAND GOAL BREAKER- Application. filed November 16, 1928, Serial No. 319,940, and in Great Britain December 2, 1927.

This invention relates to machines for breaking coal or other material of the type embodying primary and secondary picks which are moved up and down, the coal or other material being carried on a conveyor formed of steel plates hingedtogether to provide a more or less smooth table which travels under the picks whereby the coal is fall through the grids or open-meshed mem-V bers and so avoid further breakage by passing to the secondary picks.

In conjunction with the grids or openmeshed members is a deflector plate or plates which is or are disposed below the forward or COllVGYlDP section of the conveyor belt for preventing the broken material from falling on to the return side of the conveyor belt.

The invention is described with reference to the accompanying drawings illustrating a preferred embodiment of the invention.

Fig. 1 is a longitudinal section of a machine constructed according to this invention.

Fig. 2 shows a half plan of the machine, and

Fig. 3 is a transverse section on line a, a, of Fig. 1.

in the improved machine, the main driving shaft 1 is mounted upon a suitable foundation and a connecting rod 2 couples the crank shaft with a beam 3 swinging on the axis 4. The beam 3 carries on its fore end the primary picks 5 and on its aft end the secondary picks 6. Each series of picks are dependently carried from the beam 3 and the secondary picks descend through apertures 7 of take-off plates 8 on being brought into action alternately. Located below these picks is a conveyor belt consisting of a series of grids or open-meshed members 9 jointed together at 10 having apertures 11 of square shape, as shown, but these apertures may be varied circumstances require. The conveyor belt laterally extends from side to side or the machine and 1s drlven by means of four-sided or other polygonal drums 12 secured to shafts l3 and operated conveyor is at its halt period and the section of the conveyor immediately undorthe picks is then in its lowest position and is r55 resting on, or nearlv so, upon a setoi" girders 14 which serve to absorb the impact of the picks and relieve concussion from theconveyor belt. Deflector plates '15 are arranged below the forward orconveying section of the 7 conveyor belt, but above the return section o l the same, said plates sloping downwardly in anoutward lateral direction from the central part of the machine so as "to deflect the broken coal falling through the apertures 11 away from the return section oi". the conveyor belt.

111 practicegmotionis imparted by the driving shaft 1 "to the connectingrod 2 bywhich an oscillating motion is given to the beam 3 andhence analternate striking movement by the two groups ofrpicks. "llhe rotary motion of the driving shaft 1 likewise imparts rotary motion to the drums 12 and a surging movement is imparted to the conveyor belt.

The coal travelling downa chute 16 falls on to the conveyor belt, the movement of whlch brings the coal immediately under the primary picks 5, where during a period of It the dwell, the first breaking takes place. first breaking reduces the coalto the required size, such coal will pass through the-openings in theconveyor belt and not be conveyed to the secondary picks 6. The conveyor belt by its continued movement takes the larger coal 195 under the secondary picks where thecoal is reduced to the required size.

After the final breaking, all the remaining smalls will either fall through the apertures in the conveyor belt, or will be deliv- 1g motion of varying co below the forward or conveying section of V ered over the end of the conveyor belt and the whole of the broken coals then collected in a receiving hopper 17 for ultimate discharge on to a sizing screen, or into other hoppers as may be required. V

The invention is applicable to primary and secondary picks which are moved up and down simultaneously insteadof alternately.

-What I claim is V 1. In a coal breaking or like machine having primary and secondary picks movable up and down, a conveyor belt formed with a series of grids or open-meshed members jointed or linked together and movable under the 7 picks and a deflector plate or plates disposed the conveyor belt so as to deflect the broken coal falling through the forward or conveying section away from the return sect on.

2. In a coal breaking or like machine hav- 7 ing primary and secondary picks movable up and down, a conveyor belt having a series of grids or apertured members hinged together through which the material is allowed to fall after breaking by the primary picks and the larger material carried for operation by the secondary picks for delivery to a hopper, a deflector plate interposed between the forward section of the conveyer beltand the return section of the same, and polygonal drums over which the conveyor belt is arranged for giving a surging movement to said belt.

3. In a coal breaking or like machine having primary and secondary picks movable up and down, a conveyor belt having a series of s grids or apertured members jointed or linked together and movable under the picks, defiector plates arranged below the forward or conveying section of the conveyor belt and above the return section of the same, said plates sloping downwardly in an outward direction from the central part of the machine so as to deflect the broken coal falling through the forward section of the belt away from the return section ofthe same, a chute to feed coal on to the conveyor belt and a receiving hopper for ultimate discharge;

4. In a coal breaking or like machine, 'a swinging beam mounted on an intermediate axis and carrying on its forward end the primary picks and on its aft endthe' secondary picks, a conveyor belt having a series ofgrids or apertured members hinged. together and located below the primary and secondary picks, square-sided or other polygonal drums remotely positioned on which the belt is carried, out-wardly and laterally sloping deflector plates arranged below the conveying section of the belt but above the return section of the same, and means for imparting motion to the conveyor belt. r V

In testimony whereof, I have signed my name to this specification at Birmingham, England, this 26th day'of October, 1928.

V GEORGE NORTON. 

